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Chess
Chess is no joke: it has more possible sequences of moves than the number of atoms in the observable universe, but working through chess puzzles is a great way to gain insightful strategies. See more
Black to move and mate with Ra1#. The White king is not shown. Which of these squares could it be placed?
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White to move. Given optimal play, the situation is a
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Black to move. Given optimal play, the situation is a
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White to move. What's the best play?
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Black to move. The position is
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